IL71400A - Continuous process for the production of methomyl - Google Patents

Continuous process for the production of methomyl

Info

Publication number
IL71400A
IL71400A IL71400A IL7140084A IL71400A IL 71400 A IL71400 A IL 71400A IL 71400 A IL71400 A IL 71400A IL 7140084 A IL7140084 A IL 7140084A IL 71400 A IL71400 A IL 71400A
Authority
IL
Israel
Prior art keywords
methomyl
mixture
production
reactor
continuous process
Prior art date
Application number
IL71400A
Other versions
IL71400A0 (en
Original Assignee
Union Carbide Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of IL71400A0 publication Critical patent/IL71400A0/en
Publication of IL71400A publication Critical patent/IL71400A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/243—Tubular reactors spirally, concentrically or zigzag wound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

Disclosed is a continuous process for the production of methomyl comprising the steps of: continuously forming, in an inert organic solvent and at an elevated reaction-initiating temperature of from 30-70 DEG C, a liquid mixture of methylthioacetaldoxime and with methyl isocyanate in an amount in excess of stoichiometric proportions; passing the mixture through a plug-flow, adiabatic, tubular reactor, maintained at a pressure of from 30 to 70 psig, to produce reaction product at a temperature up to a reactor discharge temperature of from 80 to 120 DEG C; and withdrawing the reaction product from the reactor and stripping unreacted methyl isocyanate and solvent therefrom to provide product methomyl, while recycling at least a portion of the unreacted isocyanate and solvent to the mixture.
IL71400A 1983-03-30 1984-03-29 Continuous process for the production of methomyl IL71400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48049783A 1983-03-30 1983-03-30

Publications (2)

Publication Number Publication Date
IL71400A0 IL71400A0 (en) 1984-06-29
IL71400A true IL71400A (en) 1987-10-30

Family

ID=23908189

Family Applications (1)

Application Number Title Priority Date Filing Date
IL71400A IL71400A (en) 1983-03-30 1984-03-29 Continuous process for the production of methomyl

Country Status (8)

Country Link
EP (1) EP0121420B1 (en)
JP (1) JPS59184154A (en)
AT (1) ATE24175T1 (en)
CA (1) CA1216304A (en)
DE (1) DE3461636D1 (en)
HU (1) HU194538B (en)
IL (1) IL71400A (en)
ZA (1) ZA842364B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102924354A (en) * 2012-10-23 2013-02-13 海利贵溪化工农药有限公司 Synthetic method of methomyl
JP6086250B2 (en) * 2014-04-25 2017-03-01 大陽日酸株式会社 Gas-liquid reaction method and aminosilane production method
CN111377843B (en) * 2020-04-02 2022-03-18 湖南海利常德农药化工有限公司 Preparation method of methomyl
CN111450791B (en) * 2020-05-08 2023-04-18 河南金鹏化工有限公司 Continuous process and device for producing methomyl from methyl isocyanate
CN112125829A (en) * 2020-09-28 2020-12-25 山东华阳农药化工集团有限公司 Production method of high-purity methomyl with reduced content of impurity 1, 3-dimethyl urea

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459866A (en) * 1967-08-31 1969-08-05 James B Buchanan Hydroxamate carbamates as nematocides

Also Published As

Publication number Publication date
ZA842364B (en) 1984-11-28
JPS59184154A (en) 1984-10-19
IL71400A0 (en) 1984-06-29
CA1216304A (en) 1987-01-06
EP0121420A1 (en) 1984-10-10
ATE24175T1 (en) 1986-12-15
EP0121420B1 (en) 1986-12-10
HU194538B (en) 1988-02-29
JPS6230985B2 (en) 1987-07-06
DE3461636D1 (en) 1987-01-22

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Legal Events

Date Code Title Description
KB Patent renewed
MM9K Patent not in force due to non-payment of renewal fees